2123000001 has 48 divisors (see below), whose sum is σ = 3374212608. Its totient is φ = 1280448000.

The previous prime is 2122999961. The next prime is 2123000003. The reversal of 2123000001 is 1000003212.

It is a happy number.

It is not a de Polignac number, because 2123000001 - 2⁷ = 2122999873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (2123000003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 743226 + ... + 746076.

It is an arithmetic number, because the mean of its divisors is an integer number (70296096).

Almost surely, 2^2123000001 is an apocalyptic number.

It is an amenable number.

2123000001 is a deficient number, since it is larger than the sum of its proper divisors (1251212607).

2123000001 is a wasteful number, since it uses less digits than its factorization.

2123000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062 (or 3059 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2123000001 is about 46076.0241448847. The cubic root of 2123000001 is about 1285.2373306385.

Adding to 2123000001 its reverse (1000003212), we get a palindrome (3123003213).

The spelling of 2123000001 in words is "two billion, one hundred twenty-three million, one", and thus it is an aban number.